Commit | Line | Data |
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401ca24f | 1 | /* |
2 | * HID Sensors Driver | |
3 | * Copyright (c) 2012, Intel Corporation. | |
4 | * | |
5 | * This program is free software; you can redistribute it and/or modify it | |
6 | * under the terms and conditions of the GNU General Public License, | |
7 | * version 2, as published by the Free Software Foundation. | |
8 | * | |
9 | * This program is distributed in the hope it will be useful, but WITHOUT | |
10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
12 | * more details. | |
13 | * | |
14 | * You should have received a copy of the GNU General Public License along with | |
15 | * this program; if not, write to the Free Software Foundation, Inc., | |
16 | * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA. | |
17 | * | |
18 | */ | |
930fafd9 | 19 | |
401ca24f | 20 | #include <linux/device.h> |
21 | #include <linux/hid.h> | |
401ca24f | 22 | #include <linux/module.h> |
23 | #include <linux/slab.h> | |
24 | #include <linux/mfd/core.h> | |
25 | #include <linux/list.h> | |
26 | #include <linux/hid-sensor-ids.h> | |
27 | #include <linux/hid-sensor-hub.h> | |
28 | #include "hid-ids.h" | |
29 | ||
875e36f8 SP |
30 | #define HID_SENSOR_HUB_ENUM_QUIRK 0x01 |
31 | ||
401ca24f | 32 | /** |
33 | * struct sensor_hub_data - Hold a instance data for a HID hub device | |
34 | * @hsdev: Stored hid instance for current hub device. | |
35 | * @mutex: Mutex to serialize synchronous request. | |
36 | * @lock: Spin lock to protect pending request structure. | |
401ca24f | 37 | * @dyn_callback_list: Holds callback function |
38 | * @dyn_callback_lock: spin lock to protect callback list | |
39 | * @hid_sensor_hub_client_devs: Stores all MFD cells for a hub instance. | |
40 | * @hid_sensor_client_cnt: Number of MFD cells, (no of sensors attached). | |
ca2ed12f | 41 | * @ref_cnt: Number of MFD clients have opened this device |
401ca24f | 42 | */ |
43 | struct sensor_hub_data { | |
401ca24f | 44 | struct mutex mutex; |
45 | spinlock_t lock; | |
401ca24f | 46 | struct list_head dyn_callback_list; |
47 | spinlock_t dyn_callback_lock; | |
48 | struct mfd_cell *hid_sensor_hub_client_devs; | |
49 | int hid_sensor_client_cnt; | |
875e36f8 | 50 | unsigned long quirks; |
ca2ed12f | 51 | int ref_cnt; |
401ca24f | 52 | }; |
53 | ||
54 | /** | |
55 | * struct hid_sensor_hub_callbacks_list - Stores callback list | |
56 | * @list: list head. | |
57 | * @usage_id: usage id for a physical device. | |
58 | * @usage_callback: Stores registered callback functions. | |
59 | * @priv: Private data for a physical device. | |
60 | */ | |
61 | struct hid_sensor_hub_callbacks_list { | |
62 | struct list_head list; | |
63 | u32 usage_id; | |
ca2ed12f | 64 | struct hid_sensor_hub_device *hsdev; |
401ca24f | 65 | struct hid_sensor_hub_callbacks *usage_callback; |
66 | void *priv; | |
67 | }; | |
68 | ||
401ca24f | 69 | static struct hid_report *sensor_hub_report(int id, struct hid_device *hdev, |
70 | int dir) | |
71 | { | |
72 | struct hid_report *report; | |
73 | ||
74 | list_for_each_entry(report, &hdev->report_enum[dir].report_list, list) { | |
75 | if (report->id == id) | |
76 | return report; | |
77 | } | |
78 | hid_warn(hdev, "No report with id 0x%x found\n", id); | |
79 | ||
80 | return NULL; | |
81 | } | |
82 | ||
ca2ed12f | 83 | static int sensor_hub_get_physical_device_count(struct hid_device *hdev) |
401ca24f | 84 | { |
ca2ed12f SP |
85 | int i; |
86 | int count = 0; | |
401ca24f | 87 | |
ca2ed12f SP |
88 | for (i = 0; i < hdev->maxcollection; ++i) { |
89 | struct hid_collection *collection = &hdev->collection[i]; | |
cb67126f SP |
90 | if (collection->type == HID_COLLECTION_PHYSICAL || |
91 | collection->type == HID_COLLECTION_APPLICATION) | |
ca2ed12f | 92 | ++count; |
401ca24f | 93 | } |
94 | ||
ca2ed12f | 95 | return count; |
401ca24f | 96 | } |
97 | ||
98 | static void sensor_hub_fill_attr_info( | |
99 | struct hid_sensor_hub_attribute_info *info, | |
9f740ffa | 100 | s32 index, s32 report_id, struct hid_field *field) |
401ca24f | 101 | { |
102 | info->index = index; | |
103 | info->report_id = report_id; | |
9f740ffa SP |
104 | info->units = field->unit; |
105 | info->unit_expo = field->unit_exponent; | |
106 | info->size = (field->report_size * field->report_count)/8; | |
107 | info->logical_minimum = field->logical_minimum; | |
108 | info->logical_maximum = field->logical_maximum; | |
401ca24f | 109 | } |
110 | ||
111 | static struct hid_sensor_hub_callbacks *sensor_hub_get_callback( | |
112 | struct hid_device *hdev, | |
ca2ed12f SP |
113 | u32 usage_id, |
114 | int collection_index, | |
115 | struct hid_sensor_hub_device **hsdev, | |
116 | void **priv) | |
401ca24f | 117 | { |
118 | struct hid_sensor_hub_callbacks_list *callback; | |
119 | struct sensor_hub_data *pdata = hid_get_drvdata(hdev); | |
ed119770 | 120 | unsigned long flags; |
401ca24f | 121 | |
ed119770 | 122 | spin_lock_irqsave(&pdata->dyn_callback_lock, flags); |
401ca24f | 123 | list_for_each_entry(callback, &pdata->dyn_callback_list, list) |
cb67126f SP |
124 | if ((callback->usage_id == usage_id || |
125 | callback->usage_id == HID_USAGE_SENSOR_COLLECTION) && | |
ca2ed12f SP |
126 | (collection_index >= |
127 | callback->hsdev->start_collection_index) && | |
128 | (collection_index < | |
129 | callback->hsdev->end_collection_index)) { | |
401ca24f | 130 | *priv = callback->priv; |
ca2ed12f | 131 | *hsdev = callback->hsdev; |
ed119770 SP |
132 | spin_unlock_irqrestore(&pdata->dyn_callback_lock, |
133 | flags); | |
401ca24f | 134 | return callback->usage_callback; |
135 | } | |
ed119770 | 136 | spin_unlock_irqrestore(&pdata->dyn_callback_lock, flags); |
401ca24f | 137 | |
138 | return NULL; | |
139 | } | |
140 | ||
141 | int sensor_hub_register_callback(struct hid_sensor_hub_device *hsdev, | |
142 | u32 usage_id, | |
143 | struct hid_sensor_hub_callbacks *usage_callback) | |
144 | { | |
145 | struct hid_sensor_hub_callbacks_list *callback; | |
146 | struct sensor_hub_data *pdata = hid_get_drvdata(hsdev->hdev); | |
0ccf091d | 147 | unsigned long flags; |
401ca24f | 148 | |
0ccf091d | 149 | spin_lock_irqsave(&pdata->dyn_callback_lock, flags); |
401ca24f | 150 | list_for_each_entry(callback, &pdata->dyn_callback_list, list) |
ca2ed12f SP |
151 | if (callback->usage_id == usage_id && |
152 | callback->hsdev == hsdev) { | |
0ccf091d | 153 | spin_unlock_irqrestore(&pdata->dyn_callback_lock, flags); |
401ca24f | 154 | return -EINVAL; |
155 | } | |
2b7c4b8e | 156 | callback = kzalloc(sizeof(*callback), GFP_ATOMIC); |
401ca24f | 157 | if (!callback) { |
0ccf091d | 158 | spin_unlock_irqrestore(&pdata->dyn_callback_lock, flags); |
401ca24f | 159 | return -ENOMEM; |
160 | } | |
ca2ed12f | 161 | callback->hsdev = hsdev; |
401ca24f | 162 | callback->usage_callback = usage_callback; |
163 | callback->usage_id = usage_id; | |
164 | callback->priv = NULL; | |
cb67126f SP |
165 | /* |
166 | * If there is a handler registered for the collection type, then | |
167 | * it will handle all reports for sensors in this collection. If | |
168 | * there is also an individual sensor handler registration, then | |
169 | * we want to make sure that the reports are directed to collection | |
170 | * handler, as this may be a fusion sensor. So add collection handlers | |
171 | * to the beginning of the list, so that they are matched first. | |
172 | */ | |
173 | if (usage_id == HID_USAGE_SENSOR_COLLECTION) | |
174 | list_add(&callback->list, &pdata->dyn_callback_list); | |
175 | else | |
176 | list_add_tail(&callback->list, &pdata->dyn_callback_list); | |
0ccf091d | 177 | spin_unlock_irqrestore(&pdata->dyn_callback_lock, flags); |
401ca24f | 178 | |
179 | return 0; | |
180 | } | |
181 | EXPORT_SYMBOL_GPL(sensor_hub_register_callback); | |
182 | ||
183 | int sensor_hub_remove_callback(struct hid_sensor_hub_device *hsdev, | |
184 | u32 usage_id) | |
185 | { | |
186 | struct hid_sensor_hub_callbacks_list *callback; | |
187 | struct sensor_hub_data *pdata = hid_get_drvdata(hsdev->hdev); | |
0ccf091d | 188 | unsigned long flags; |
401ca24f | 189 | |
0ccf091d | 190 | spin_lock_irqsave(&pdata->dyn_callback_lock, flags); |
401ca24f | 191 | list_for_each_entry(callback, &pdata->dyn_callback_list, list) |
ca2ed12f SP |
192 | if (callback->usage_id == usage_id && |
193 | callback->hsdev == hsdev) { | |
401ca24f | 194 | list_del(&callback->list); |
195 | kfree(callback); | |
196 | break; | |
197 | } | |
0ccf091d | 198 | spin_unlock_irqrestore(&pdata->dyn_callback_lock, flags); |
401ca24f | 199 | |
200 | return 0; | |
201 | } | |
202 | EXPORT_SYMBOL_GPL(sensor_hub_remove_callback); | |
203 | ||
204 | int sensor_hub_set_feature(struct hid_sensor_hub_device *hsdev, u32 report_id, | |
3950e033 | 205 | u32 field_index, int buffer_size, void *buffer) |
401ca24f | 206 | { |
207 | struct hid_report *report; | |
5902fde1 | 208 | struct sensor_hub_data *data = hid_get_drvdata(hsdev->hdev); |
3950e033 SP |
209 | __s32 *buf32 = buffer; |
210 | int i = 0; | |
211 | int remaining_bytes; | |
212 | __s32 value; | |
401ca24f | 213 | int ret = 0; |
214 | ||
401ca24f | 215 | mutex_lock(&data->mutex); |
216 | report = sensor_hub_report(report_id, hsdev->hdev, HID_FEATURE_REPORT); | |
5902fde1 | 217 | if (!report || (field_index >= report->maxfield)) { |
401ca24f | 218 | ret = -EINVAL; |
219 | goto done_proc; | |
220 | } | |
3950e033 | 221 | |
8d43b49e NP |
222 | remaining_bytes = buffer_size % sizeof(__s32); |
223 | buffer_size = buffer_size / sizeof(__s32); | |
3950e033 SP |
224 | if (buffer_size) { |
225 | for (i = 0; i < buffer_size; ++i) { | |
226 | hid_set_field(report->field[field_index], i, | |
62fad137 | 227 | (__force __s32)cpu_to_le32(*buf32)); |
3950e033 SP |
228 | ++buf32; |
229 | } | |
230 | } | |
231 | if (remaining_bytes) { | |
232 | value = 0; | |
233 | memcpy(&value, (u8 *)buf32, remaining_bytes); | |
234 | hid_set_field(report->field[field_index], i, | |
62fad137 | 235 | (__force __s32)cpu_to_le32(value)); |
3950e033 | 236 | } |
d8814272 | 237 | hid_hw_request(hsdev->hdev, report, HID_REQ_SET_REPORT); |
b7966a4d | 238 | hid_hw_wait(hsdev->hdev); |
401ca24f | 239 | |
240 | done_proc: | |
241 | mutex_unlock(&data->mutex); | |
242 | ||
243 | return ret; | |
244 | } | |
245 | EXPORT_SYMBOL_GPL(sensor_hub_set_feature); | |
246 | ||
247 | int sensor_hub_get_feature(struct hid_sensor_hub_device *hsdev, u32 report_id, | |
6adc83fc | 248 | u32 field_index, int buffer_size, void *buffer) |
401ca24f | 249 | { |
250 | struct hid_report *report; | |
5902fde1 | 251 | struct sensor_hub_data *data = hid_get_drvdata(hsdev->hdev); |
6adc83fc | 252 | int report_size; |
401ca24f | 253 | int ret = 0; |
254 | ||
401ca24f | 255 | mutex_lock(&data->mutex); |
256 | report = sensor_hub_report(report_id, hsdev->hdev, HID_FEATURE_REPORT); | |
4e5a494e | 257 | if (!report || (field_index >= report->maxfield) || |
9e891025 | 258 | report->field[field_index]->report_count < 1) { |
401ca24f | 259 | ret = -EINVAL; |
260 | goto done_proc; | |
261 | } | |
d8814272 | 262 | hid_hw_request(hsdev->hdev, report, HID_REQ_GET_REPORT); |
b7966a4d | 263 | hid_hw_wait(hsdev->hdev); |
6adc83fc SP |
264 | |
265 | /* calculate number of bytes required to read this field */ | |
266 | report_size = DIV_ROUND_UP(report->field[field_index]->report_size, | |
267 | 8) * | |
268 | report->field[field_index]->report_count; | |
269 | if (!report_size) { | |
270 | ret = -EINVAL; | |
271 | goto done_proc; | |
272 | } | |
273 | ret = min(report_size, buffer_size); | |
274 | memcpy(buffer, report->field[field_index]->value, ret); | |
401ca24f | 275 | |
276 | done_proc: | |
277 | mutex_unlock(&data->mutex); | |
278 | ||
279 | return ret; | |
280 | } | |
281 | EXPORT_SYMBOL_GPL(sensor_hub_get_feature); | |
282 | ||
283 | ||
284 | int sensor_hub_input_attr_get_raw_value(struct hid_sensor_hub_device *hsdev, | |
285 | u32 usage_id, | |
b3f4737d SP |
286 | u32 attr_usage_id, u32 report_id, |
287 | enum sensor_hub_read_flags flag) | |
401ca24f | 288 | { |
5902fde1 | 289 | struct sensor_hub_data *data = hid_get_drvdata(hsdev->hdev); |
401ca24f | 290 | unsigned long flags; |
291 | struct hid_report *report; | |
292 | int ret_val = 0; | |
293 | ||
b3f4737d SP |
294 | report = sensor_hub_report(report_id, hsdev->hdev, |
295 | HID_INPUT_REPORT); | |
f74346a0 | 296 | if (!report) |
b3f4737d | 297 | return -EINVAL; |
f74346a0 | 298 | |
2d94e522 | 299 | mutex_lock(hsdev->mutex_ptr); |
b3f4737d SP |
300 | if (flag == SENSOR_HUB_SYNC) { |
301 | memset(&hsdev->pending, 0, sizeof(hsdev->pending)); | |
302 | init_completion(&hsdev->pending.ready); | |
303 | hsdev->pending.usage_id = usage_id; | |
304 | hsdev->pending.attr_usage_id = attr_usage_id; | |
305 | hsdev->pending.raw_size = 0; | |
306 | ||
307 | spin_lock_irqsave(&data->lock, flags); | |
308 | hsdev->pending.status = true; | |
309 | spin_unlock_irqrestore(&data->lock, flags); | |
401ca24f | 310 | } |
e651a1da | 311 | mutex_lock(&data->mutex); |
d8814272 | 312 | hid_hw_request(hsdev->hdev, report, HID_REQ_GET_REPORT); |
401ca24f | 313 | mutex_unlock(&data->mutex); |
b3f4737d SP |
314 | if (flag == SENSOR_HUB_SYNC) { |
315 | wait_for_completion_interruptible_timeout( | |
316 | &hsdev->pending.ready, HZ*5); | |
317 | switch (hsdev->pending.raw_size) { | |
318 | case 1: | |
319 | ret_val = *(u8 *)hsdev->pending.raw_data; | |
320 | break; | |
321 | case 2: | |
322 | ret_val = *(u16 *)hsdev->pending.raw_data; | |
323 | break; | |
324 | case 4: | |
325 | ret_val = *(u32 *)hsdev->pending.raw_data; | |
326 | break; | |
327 | default: | |
328 | ret_val = 0; | |
329 | } | |
330 | kfree(hsdev->pending.raw_data); | |
331 | hsdev->pending.status = false; | |
401ca24f | 332 | } |
2d94e522 | 333 | mutex_unlock(hsdev->mutex_ptr); |
401ca24f | 334 | |
335 | return ret_val; | |
336 | } | |
337 | EXPORT_SYMBOL_GPL(sensor_hub_input_attr_get_raw_value); | |
338 | ||
e02cee48 SP |
339 | int hid_sensor_get_usage_index(struct hid_sensor_hub_device *hsdev, |
340 | u32 report_id, int field_index, u32 usage_id) | |
341 | { | |
342 | struct hid_report *report; | |
343 | struct hid_field *field; | |
344 | int i; | |
345 | ||
346 | report = sensor_hub_report(report_id, hsdev->hdev, HID_FEATURE_REPORT); | |
347 | if (!report || (field_index >= report->maxfield)) | |
348 | goto done_proc; | |
349 | ||
350 | field = report->field[field_index]; | |
351 | for (i = 0; i < field->maxusage; ++i) { | |
352 | if (field->usage[i].hid == usage_id) | |
353 | return field->usage[i].usage_index; | |
354 | } | |
355 | ||
356 | done_proc: | |
357 | return -EINVAL; | |
358 | } | |
359 | EXPORT_SYMBOL_GPL(hid_sensor_get_usage_index); | |
360 | ||
401ca24f | 361 | int sensor_hub_input_get_attribute_info(struct hid_sensor_hub_device *hsdev, |
362 | u8 type, | |
363 | u32 usage_id, | |
364 | u32 attr_usage_id, | |
365 | struct hid_sensor_hub_attribute_info *info) | |
366 | { | |
367 | int ret = -1; | |
ca2ed12f | 368 | int i; |
401ca24f | 369 | struct hid_report *report; |
370 | struct hid_field *field; | |
371 | struct hid_report_enum *report_enum; | |
372 | struct hid_device *hdev = hsdev->hdev; | |
373 | ||
374 | /* Initialize with defaults */ | |
375 | info->usage_id = usage_id; | |
5902fde1 | 376 | info->attrib_id = attr_usage_id; |
401ca24f | 377 | info->report_id = -1; |
378 | info->index = -1; | |
379 | info->units = -1; | |
380 | info->unit_expo = -1; | |
381 | ||
401ca24f | 382 | report_enum = &hdev->report_enum[type]; |
383 | list_for_each_entry(report, &report_enum->report_list, list) { | |
384 | for (i = 0; i < report->maxfield; ++i) { | |
385 | field = report->field[i]; | |
ca2ed12f SP |
386 | if (field->maxusage) { |
387 | if (field->physical == usage_id && | |
388 | (field->logical == attr_usage_id || | |
389 | field->usage[0].hid == | |
390 | attr_usage_id) && | |
391 | (field->usage[0].collection_index >= | |
392 | hsdev->start_collection_index) && | |
393 | (field->usage[0].collection_index < | |
394 | hsdev->end_collection_index)) { | |
395 | ||
396 | sensor_hub_fill_attr_info(info, i, | |
397 | report->id, | |
398 | field); | |
399 | ret = 0; | |
400 | break; | |
401ca24f | 401 | } |
402 | } | |
401ca24f | 403 | } |
ca2ed12f | 404 | |
401ca24f | 405 | } |
406 | ||
401ca24f | 407 | return ret; |
408 | } | |
409 | EXPORT_SYMBOL_GPL(sensor_hub_input_get_attribute_info); | |
410 | ||
411 | #ifdef CONFIG_PM | |
412 | static int sensor_hub_suspend(struct hid_device *hdev, pm_message_t message) | |
413 | { | |
5902fde1 | 414 | struct sensor_hub_data *pdata = hid_get_drvdata(hdev); |
401ca24f | 415 | struct hid_sensor_hub_callbacks_list *callback; |
0ccf091d | 416 | unsigned long flags; |
401ca24f | 417 | |
418 | hid_dbg(hdev, " sensor_hub_suspend\n"); | |
0ccf091d | 419 | spin_lock_irqsave(&pdata->dyn_callback_lock, flags); |
401ca24f | 420 | list_for_each_entry(callback, &pdata->dyn_callback_list, list) { |
421 | if (callback->usage_callback->suspend) | |
422 | callback->usage_callback->suspend( | |
ca2ed12f | 423 | callback->hsdev, callback->priv); |
401ca24f | 424 | } |
0ccf091d | 425 | spin_unlock_irqrestore(&pdata->dyn_callback_lock, flags); |
401ca24f | 426 | |
427 | return 0; | |
428 | } | |
429 | ||
430 | static int sensor_hub_resume(struct hid_device *hdev) | |
431 | { | |
5902fde1 | 432 | struct sensor_hub_data *pdata = hid_get_drvdata(hdev); |
401ca24f | 433 | struct hid_sensor_hub_callbacks_list *callback; |
0ccf091d | 434 | unsigned long flags; |
401ca24f | 435 | |
436 | hid_dbg(hdev, " sensor_hub_resume\n"); | |
0ccf091d | 437 | spin_lock_irqsave(&pdata->dyn_callback_lock, flags); |
401ca24f | 438 | list_for_each_entry(callback, &pdata->dyn_callback_list, list) { |
439 | if (callback->usage_callback->resume) | |
440 | callback->usage_callback->resume( | |
ca2ed12f | 441 | callback->hsdev, callback->priv); |
401ca24f | 442 | } |
0ccf091d | 443 | spin_unlock_irqrestore(&pdata->dyn_callback_lock, flags); |
401ca24f | 444 | |
445 | return 0; | |
446 | } | |
447 | ||
448 | static int sensor_hub_reset_resume(struct hid_device *hdev) | |
449 | { | |
450 | return 0; | |
451 | } | |
452 | #endif | |
5902fde1 | 453 | |
401ca24f | 454 | /* |
455 | * Handle raw report as sent by device | |
456 | */ | |
457 | static int sensor_hub_raw_event(struct hid_device *hdev, | |
458 | struct hid_report *report, u8 *raw_data, int size) | |
459 | { | |
460 | int i; | |
461 | u8 *ptr; | |
462 | int sz; | |
463 | struct sensor_hub_data *pdata = hid_get_drvdata(hdev); | |
464 | unsigned long flags; | |
465 | struct hid_sensor_hub_callbacks *callback = NULL; | |
466 | struct hid_collection *collection = NULL; | |
467 | void *priv = NULL; | |
ca2ed12f | 468 | struct hid_sensor_hub_device *hsdev = NULL; |
401ca24f | 469 | |
470 | hid_dbg(hdev, "sensor_hub_raw_event report id:0x%x size:%d type:%d\n", | |
471 | report->id, size, report->type); | |
472 | hid_dbg(hdev, "maxfield:%d\n", report->maxfield); | |
473 | if (report->type != HID_INPUT_REPORT) | |
474 | return 1; | |
475 | ||
476 | ptr = raw_data; | |
15261f6d | 477 | ptr++; /* Skip report id */ |
401ca24f | 478 | |
401ca24f | 479 | spin_lock_irqsave(&pdata->lock, flags); |
480 | ||
481 | for (i = 0; i < report->maxfield; ++i) { | |
401ca24f | 482 | hid_dbg(hdev, "%d collection_index:%x hid:%x sz:%x\n", |
483 | i, report->field[i]->usage->collection_index, | |
484 | report->field[i]->usage->hid, | |
d4b1bba7 SP |
485 | (report->field[i]->report_size * |
486 | report->field[i]->report_count)/8); | |
487 | sz = (report->field[i]->report_size * | |
488 | report->field[i]->report_count)/8; | |
401ca24f | 489 | collection = &hdev->collection[ |
490 | report->field[i]->usage->collection_index]; | |
491 | hid_dbg(hdev, "collection->usage %x\n", | |
492 | collection->usage); | |
ca2ed12f SP |
493 | |
494 | callback = sensor_hub_get_callback(hdev, | |
495 | report->field[i]->physical, | |
496 | report->field[i]->usage[0].collection_index, | |
497 | &hsdev, &priv); | |
e651a1da SP |
498 | if (!callback) { |
499 | ptr += sz; | |
500 | continue; | |
501 | } | |
eb964833 SP |
502 | if (hsdev->pending.status && (hsdev->pending.attr_usage_id == |
503 | report->field[i]->usage->hid || | |
504 | hsdev->pending.attr_usage_id == | |
505 | report->field[i]->logical)) { | |
e651a1da SP |
506 | hid_dbg(hdev, "data was pending ...\n"); |
507 | hsdev->pending.raw_data = kmemdup(ptr, sz, GFP_ATOMIC); | |
508 | if (hsdev->pending.raw_data) | |
509 | hsdev->pending.raw_size = sz; | |
510 | else | |
511 | hsdev->pending.raw_size = 0; | |
512 | complete(&hsdev->pending.ready); | |
513 | } | |
514 | if (callback->capture_sample) { | |
401ca24f | 515 | if (report->field[i]->logical) |
ca2ed12f | 516 | callback->capture_sample(hsdev, |
401ca24f | 517 | report->field[i]->logical, sz, ptr, |
518 | callback->pdev); | |
519 | else | |
ca2ed12f | 520 | callback->capture_sample(hsdev, |
401ca24f | 521 | report->field[i]->usage->hid, sz, ptr, |
522 | callback->pdev); | |
523 | } | |
524 | ptr += sz; | |
525 | } | |
526 | if (callback && collection && callback->send_event) | |
ca2ed12f | 527 | callback->send_event(hsdev, collection->usage, |
401ca24f | 528 | callback->pdev); |
529 | spin_unlock_irqrestore(&pdata->lock, flags); | |
530 | ||
401ca24f | 531 | return 1; |
532 | } | |
533 | ||
1df3a401 SP |
534 | int sensor_hub_device_open(struct hid_sensor_hub_device *hsdev) |
535 | { | |
536 | int ret = 0; | |
537 | struct sensor_hub_data *data = hid_get_drvdata(hsdev->hdev); | |
538 | ||
539 | mutex_lock(&data->mutex); | |
ca2ed12f | 540 | if (!data->ref_cnt) { |
1df3a401 SP |
541 | ret = hid_hw_open(hsdev->hdev); |
542 | if (ret) { | |
543 | hid_err(hsdev->hdev, "failed to open hid device\n"); | |
544 | mutex_unlock(&data->mutex); | |
545 | return ret; | |
546 | } | |
547 | } | |
ca2ed12f | 548 | data->ref_cnt++; |
1df3a401 SP |
549 | mutex_unlock(&data->mutex); |
550 | ||
551 | return ret; | |
552 | } | |
553 | EXPORT_SYMBOL_GPL(sensor_hub_device_open); | |
554 | ||
555 | void sensor_hub_device_close(struct hid_sensor_hub_device *hsdev) | |
556 | { | |
557 | struct sensor_hub_data *data = hid_get_drvdata(hsdev->hdev); | |
558 | ||
559 | mutex_lock(&data->mutex); | |
ca2ed12f SP |
560 | data->ref_cnt--; |
561 | if (!data->ref_cnt) | |
1df3a401 SP |
562 | hid_hw_close(hsdev->hdev); |
563 | mutex_unlock(&data->mutex); | |
564 | } | |
565 | EXPORT_SYMBOL_GPL(sensor_hub_device_close); | |
566 | ||
875e36f8 SP |
567 | static __u8 *sensor_hub_report_fixup(struct hid_device *hdev, __u8 *rdesc, |
568 | unsigned int *rsize) | |
569 | { | |
570 | int index; | |
571 | struct sensor_hub_data *sd = hid_get_drvdata(hdev); | |
572 | unsigned char report_block[] = { | |
573 | 0x0a, 0x16, 0x03, 0x15, 0x00, 0x25, 0x05}; | |
574 | unsigned char power_block[] = { | |
575 | 0x0a, 0x19, 0x03, 0x15, 0x00, 0x25, 0x05}; | |
576 | ||
577 | if (!(sd->quirks & HID_SENSOR_HUB_ENUM_QUIRK)) { | |
578 | hid_dbg(hdev, "No Enum quirks\n"); | |
579 | return rdesc; | |
580 | } | |
581 | ||
582 | /* Looks for power and report state usage id and force to 1 */ | |
583 | for (index = 0; index < *rsize; ++index) { | |
584 | if (((*rsize - index) > sizeof(report_block)) && | |
585 | !memcmp(&rdesc[index], report_block, | |
586 | sizeof(report_block))) { | |
587 | rdesc[index + 4] = 0x01; | |
588 | index += sizeof(report_block); | |
589 | } | |
590 | if (((*rsize - index) > sizeof(power_block)) && | |
591 | !memcmp(&rdesc[index], power_block, | |
592 | sizeof(power_block))) { | |
593 | rdesc[index + 4] = 0x01; | |
594 | index += sizeof(power_block); | |
595 | } | |
596 | } | |
597 | ||
9fe8ecca FL |
598 | /* Checks if the report descriptor of Thinkpad Helix 2 has a logical |
599 | * minimum for magnetic flux axis greater than the maximum */ | |
600 | if (hdev->product == USB_DEVICE_ID_TEXAS_INSTRUMENTS_LENOVO_YOGA && | |
601 | *rsize == 2558 && rdesc[913] == 0x17 && rdesc[914] == 0x40 && | |
602 | rdesc[915] == 0x81 && rdesc[916] == 0x08 && | |
603 | rdesc[917] == 0x00 && rdesc[918] == 0x27 && | |
604 | rdesc[921] == 0x07 && rdesc[922] == 0x00) { | |
605 | /* Sets negative logical minimum for mag x, y and z */ | |
606 | rdesc[914] = rdesc[935] = rdesc[956] = 0xc0; | |
607 | rdesc[915] = rdesc[936] = rdesc[957] = 0x7e; | |
608 | rdesc[916] = rdesc[937] = rdesc[958] = 0xf7; | |
609 | rdesc[917] = rdesc[938] = rdesc[959] = 0xff; | |
610 | } | |
611 | ||
875e36f8 SP |
612 | return rdesc; |
613 | } | |
614 | ||
401ca24f | 615 | static int sensor_hub_probe(struct hid_device *hdev, |
616 | const struct hid_device_id *id) | |
617 | { | |
618 | int ret; | |
619 | struct sensor_hub_data *sd; | |
620 | int i; | |
621 | char *name; | |
401ca24f | 622 | int dev_cnt; |
ca2ed12f SP |
623 | struct hid_sensor_hub_device *hsdev; |
624 | struct hid_sensor_hub_device *last_hsdev = NULL; | |
cb67126f | 625 | struct hid_sensor_hub_device *collection_hsdev = NULL; |
401ca24f | 626 | |
905cc199 | 627 | sd = devm_kzalloc(&hdev->dev, sizeof(*sd), GFP_KERNEL); |
401ca24f | 628 | if (!sd) { |
629 | hid_err(hdev, "cannot allocate Sensor data\n"); | |
630 | return -ENOMEM; | |
631 | } | |
ca2ed12f | 632 | |
401ca24f | 633 | hid_set_drvdata(hdev, sd); |
875e36f8 | 634 | sd->quirks = id->driver_data; |
ca2ed12f | 635 | |
401ca24f | 636 | spin_lock_init(&sd->lock); |
637 | spin_lock_init(&sd->dyn_callback_lock); | |
638 | mutex_init(&sd->mutex); | |
639 | ret = hid_parse(hdev); | |
640 | if (ret) { | |
641 | hid_err(hdev, "parse failed\n"); | |
905cc199 | 642 | return ret; |
401ca24f | 643 | } |
401ca24f | 644 | INIT_LIST_HEAD(&hdev->inputs); |
645 | ||
401ca24f | 646 | ret = hid_hw_start(hdev, 0); |
647 | if (ret) { | |
648 | hid_err(hdev, "hw start failed\n"); | |
905cc199 | 649 | return ret; |
401ca24f | 650 | } |
401ca24f | 651 | INIT_LIST_HEAD(&sd->dyn_callback_list); |
652 | sd->hid_sensor_client_cnt = 0; | |
401ca24f | 653 | |
ca2ed12f | 654 | dev_cnt = sensor_hub_get_physical_device_count(hdev); |
401ca24f | 655 | if (dev_cnt > HID_MAX_PHY_DEVICES) { |
656 | hid_err(hdev, "Invalid Physical device count\n"); | |
657 | ret = -EINVAL; | |
1df3a401 | 658 | goto err_stop_hw; |
401ca24f | 659 | } |
5be5db24 HS |
660 | sd->hid_sensor_hub_client_devs = devm_kzalloc(&hdev->dev, dev_cnt * |
661 | sizeof(struct mfd_cell), | |
662 | GFP_KERNEL); | |
401ca24f | 663 | if (sd->hid_sensor_hub_client_devs == NULL) { |
f2f13a68 | 664 | hid_err(hdev, "Failed to allocate memory for mfd cells\n"); |
636a89d4 JS |
665 | ret = -ENOMEM; |
666 | goto err_stop_hw; | |
401ca24f | 667 | } |
ca2ed12f SP |
668 | |
669 | for (i = 0; i < hdev->maxcollection; ++i) { | |
670 | struct hid_collection *collection = &hdev->collection[i]; | |
671 | ||
cb67126f SP |
672 | if (collection->type == HID_COLLECTION_PHYSICAL || |
673 | collection->type == HID_COLLECTION_APPLICATION) { | |
ca2ed12f | 674 | |
5be5db24 HS |
675 | hsdev = devm_kzalloc(&hdev->dev, sizeof(*hsdev), |
676 | GFP_KERNEL); | |
ca2ed12f SP |
677 | if (!hsdev) { |
678 | hid_err(hdev, "cannot allocate hid_sensor_hub_device\n"); | |
679 | ret = -ENOMEM; | |
5be5db24 | 680 | goto err_stop_hw; |
ca2ed12f SP |
681 | } |
682 | hsdev->hdev = hdev; | |
683 | hsdev->vendor_id = hdev->vendor; | |
684 | hsdev->product_id = hdev->product; | |
e651a1da | 685 | hsdev->usage = collection->usage; |
2d94e522 SP |
686 | hsdev->mutex_ptr = devm_kzalloc(&hdev->dev, |
687 | sizeof(struct mutex), | |
688 | GFP_KERNEL); | |
689 | if (!hsdev->mutex_ptr) { | |
690 | ret = -ENOMEM; | |
691 | goto err_stop_hw; | |
692 | } | |
693 | mutex_init(hsdev->mutex_ptr); | |
ca2ed12f SP |
694 | hsdev->start_collection_index = i; |
695 | if (last_hsdev) | |
696 | last_hsdev->end_collection_index = i; | |
697 | last_hsdev = hsdev; | |
5be5db24 HS |
698 | name = devm_kasprintf(&hdev->dev, GFP_KERNEL, |
699 | "HID-SENSOR-%x", | |
700 | collection->usage); | |
5902fde1 | 701 | if (name == NULL) { |
f2f13a68 | 702 | hid_err(hdev, "Failed MFD device name\n"); |
636a89d4 JS |
703 | ret = -ENOMEM; |
704 | goto err_stop_hw; | |
401ca24f | 705 | } |
d81cae80 | 706 | sd->hid_sensor_hub_client_devs[ |
401ca24f | 707 | sd->hid_sensor_client_cnt].name = name; |
708 | sd->hid_sensor_hub_client_devs[ | |
709 | sd->hid_sensor_client_cnt].platform_data = | |
ca2ed12f | 710 | hsdev; |
401ca24f | 711 | sd->hid_sensor_hub_client_devs[ |
712 | sd->hid_sensor_client_cnt].pdata_size = | |
ca2ed12f SP |
713 | sizeof(*hsdev); |
714 | hid_dbg(hdev, "Adding %s:%d\n", name, | |
715 | hsdev->start_collection_index); | |
401ca24f | 716 | sd->hid_sensor_client_cnt++; |
cb67126f SP |
717 | if (collection_hsdev) |
718 | collection_hsdev->end_collection_index = i; | |
719 | if (collection->type == HID_COLLECTION_APPLICATION && | |
720 | collection->usage == HID_USAGE_SENSOR_COLLECTION) | |
721 | collection_hsdev = hsdev; | |
401ca24f | 722 | } |
723 | } | |
ca2ed12f SP |
724 | if (last_hsdev) |
725 | last_hsdev->end_collection_index = i; | |
cb67126f SP |
726 | if (collection_hsdev) |
727 | collection_hsdev->end_collection_index = i; | |
ca2ed12f | 728 | |
16b5fe29 JH |
729 | ret = mfd_add_hotplug_devices(&hdev->dev, |
730 | sd->hid_sensor_hub_client_devs, | |
731 | sd->hid_sensor_client_cnt); | |
401ca24f | 732 | if (ret < 0) |
5be5db24 | 733 | goto err_stop_hw; |
401ca24f | 734 | |
735 | return ret; | |
736 | ||
401ca24f | 737 | err_stop_hw: |
738 | hid_hw_stop(hdev); | |
401ca24f | 739 | |
740 | return ret; | |
741 | } | |
742 | ||
743 | static void sensor_hub_remove(struct hid_device *hdev) | |
744 | { | |
745 | struct sensor_hub_data *data = hid_get_drvdata(hdev); | |
746 | unsigned long flags; | |
e651a1da | 747 | int i; |
401ca24f | 748 | |
749 | hid_dbg(hdev, " hardware removed\n"); | |
401ca24f | 750 | hid_hw_close(hdev); |
f2f13a68 | 751 | hid_hw_stop(hdev); |
401ca24f | 752 | spin_lock_irqsave(&data->lock, flags); |
e651a1da SP |
753 | for (i = 0; i < data->hid_sensor_client_cnt; ++i) { |
754 | struct hid_sensor_hub_device *hsdev = | |
755 | data->hid_sensor_hub_client_devs[i].platform_data; | |
756 | if (hsdev->pending.status) | |
757 | complete(&hsdev->pending.ready); | |
758 | } | |
401ca24f | 759 | spin_unlock_irqrestore(&data->lock, flags); |
760 | mfd_remove_devices(&hdev->dev); | |
401ca24f | 761 | hid_set_drvdata(hdev, NULL); |
762 | mutex_destroy(&data->mutex); | |
401ca24f | 763 | } |
764 | ||
765 | static const struct hid_device_id sensor_hub_devices[] = { | |
875e36f8 | 766 | { HID_DEVICE(HID_BUS_ANY, HID_GROUP_SENSOR_HUB, USB_VENDOR_ID_INTEL_0, |
30f58877 | 767 | USB_DEVICE_ID_INTEL_HID_SENSOR_0), |
875e36f8 SP |
768 | .driver_data = HID_SENSOR_HUB_ENUM_QUIRK}, |
769 | { HID_DEVICE(HID_BUS_ANY, HID_GROUP_SENSOR_HUB, USB_VENDOR_ID_INTEL_1, | |
30f58877 SCP |
770 | USB_DEVICE_ID_INTEL_HID_SENSOR_0), |
771 | .driver_data = HID_SENSOR_HUB_ENUM_QUIRK}, | |
772 | { HID_DEVICE(HID_BUS_ANY, HID_GROUP_SENSOR_HUB, USB_VENDOR_ID_INTEL_1, | |
773 | USB_DEVICE_ID_INTEL_HID_SENSOR_1), | |
875e36f8 | 774 | .driver_data = HID_SENSOR_HUB_ENUM_QUIRK}, |
00478ee8 RA |
775 | { HID_DEVICE(HID_BUS_ANY, HID_GROUP_SENSOR_HUB, USB_VENDOR_ID_MICROSOFT, |
776 | USB_DEVICE_ID_MS_SURFACE_PRO_2), | |
777 | .driver_data = HID_SENSOR_HUB_ENUM_QUIRK}, | |
778 | { HID_DEVICE(HID_BUS_ANY, HID_GROUP_SENSOR_HUB, USB_VENDOR_ID_MICROSOFT, | |
779 | USB_DEVICE_ID_MS_TOUCH_COVER_2), | |
780 | .driver_data = HID_SENSOR_HUB_ENUM_QUIRK}, | |
781 | { HID_DEVICE(HID_BUS_ANY, HID_GROUP_SENSOR_HUB, USB_VENDOR_ID_MICROSOFT, | |
782 | USB_DEVICE_ID_MS_TYPE_COVER_2), | |
783 | .driver_data = HID_SENSOR_HUB_ENUM_QUIRK}, | |
467669c5 SP |
784 | { HID_DEVICE(HID_BUS_ANY, HID_GROUP_SENSOR_HUB, USB_VENDOR_ID_STM_0, |
785 | USB_DEVICE_ID_STM_HID_SENSOR), | |
786 | .driver_data = HID_SENSOR_HUB_ENUM_QUIRK}, | |
218eb9ed | 787 | { HID_DEVICE(HID_BUS_ANY, HID_GROUP_SENSOR_HUB, USB_VENDOR_ID_STM_0, |
dde3b45c | 788 | USB_DEVICE_ID_STM_HID_SENSOR_1), |
218eb9ed | 789 | .driver_data = HID_SENSOR_HUB_ENUM_QUIRK}, |
825747bb PPS |
790 | { HID_DEVICE(HID_BUS_ANY, HID_GROUP_SENSOR_HUB, USB_VENDOR_ID_TEXAS_INSTRUMENTS, |
791 | USB_DEVICE_ID_TEXAS_INSTRUMENTS_LENOVO_YOGA), | |
792 | .driver_data = HID_SENSOR_HUB_ENUM_QUIRK}, | |
21589ebd GL |
793 | { HID_DEVICE(HID_BUS_ANY, HID_GROUP_SENSOR_HUB, USB_VENDOR_ID_ITE, |
794 | USB_DEVICE_ID_ITE_LENOVO_YOGA), | |
795 | .driver_data = HID_SENSOR_HUB_ENUM_QUIRK}, | |
e8e88438 RRS |
796 | { HID_DEVICE(HID_BUS_ANY, HID_GROUP_SENSOR_HUB, USB_VENDOR_ID_ITE, |
797 | USB_DEVICE_ID_ITE_LENOVO_YOGA2), | |
798 | .driver_data = HID_SENSOR_HUB_ENUM_QUIRK}, | |
76833559 SP |
799 | { HID_DEVICE(HID_BUS_ANY, HID_GROUP_SENSOR_HUB, USB_VENDOR_ID_ITE, |
800 | USB_DEVICE_ID_ITE_LENOVO_YOGA900), | |
801 | .driver_data = HID_SENSOR_HUB_ENUM_QUIRK}, | |
930fafd9 SP |
802 | { HID_DEVICE(HID_BUS_ANY, HID_GROUP_SENSOR_HUB, USB_VENDOR_ID_INTEL_0, |
803 | 0x22D8), | |
804 | .driver_data = HID_SENSOR_HUB_ENUM_QUIRK}, | |
0d1e4b02 MW |
805 | { HID_DEVICE(HID_BUS_ANY, HID_GROUP_SENSOR_HUB, HID_ANY_ID, |
806 | HID_ANY_ID) }, | |
401ca24f | 807 | { } |
808 | }; | |
809 | MODULE_DEVICE_TABLE(hid, sensor_hub_devices); | |
810 | ||
401ca24f | 811 | static struct hid_driver sensor_hub_driver = { |
812 | .name = "hid-sensor-hub", | |
813 | .id_table = sensor_hub_devices, | |
814 | .probe = sensor_hub_probe, | |
815 | .remove = sensor_hub_remove, | |
816 | .raw_event = sensor_hub_raw_event, | |
875e36f8 | 817 | .report_fixup = sensor_hub_report_fixup, |
401ca24f | 818 | #ifdef CONFIG_PM |
819 | .suspend = sensor_hub_suspend, | |
5902fde1 AS |
820 | .resume = sensor_hub_resume, |
821 | .reset_resume = sensor_hub_reset_resume, | |
401ca24f | 822 | #endif |
823 | }; | |
f425458e | 824 | module_hid_driver(sensor_hub_driver); |
401ca24f | 825 | |
826 | MODULE_DESCRIPTION("HID Sensor Hub driver"); | |
827 | MODULE_AUTHOR("Srinivas Pandruvada <srinivas.pandruvada@intel.com>"); | |
828 | MODULE_LICENSE("GPL"); |